package com.framework.core.utils;

/**
 * 判断字符串
 * 
 * @author Rose 2017年9月14日
 */
public class StringUtils {

	public static boolean isEmpty(final CharSequence cs) {
		return cs == null || cs.length() == 0;
	}

	public static boolean isNotEmpty(final CharSequence cs) {
		return !StringUtils.isEmpty(cs);
	}

	// 首字母转小写
	public static String toLowerCaseFirstOne(String s) {
		if (Character.isLowerCase(s.charAt(0)))
			return s;
		else
			return (new StringBuilder()).append(Character.toLowerCase(s.charAt(0))).append(s.substring(1)).toString();
	}

	// 首字母转大写
	public static String toUpperCaseFirstOne(String s) {
		if (Character.isUpperCase(s.charAt(0)))
			return s;
		else
			return (new StringBuilder()).append(Character.toUpperCase(s.charAt(0))).append(s.substring(1)).toString();
	}

}
